6.4.1- Compressor faults 6.4.1.1 - General

Each compressor is protected against multiple faults by two digital inputs located on the control board. If one of these inputs opens, it causes an immediate shutdown on the compressor without any action from the basic board.

6.4.1.2 - Compressor protection devices

On PRO-DIALOG Plus units, compressors are individually protected by the following devices connected to the digital inputs on the compressor control board:

ALARM CODE DESCRIPTIONS

DGT (only for units with low-temperature option):

The discharge gas thermostat detects and protects the compressor against abnormally high discharge temperatures.

Starter Guard:

This board patented by Carrier (also called AM board) monitors both the compressor regime and the status of its crankcase heaters which ensure correct lubrication when the compressor starts.

Code

Alarm name

Action

Pumpdown

Reset type

Probable cause

101

DGT fault, compressor A1

Circuit A shut down

No

Manual

Hot gas thermostat contact open

102

Starter Guard fault compressor A1

Circuit A shut down

No

Ditto

Crankcase heater fault and open motor current

 

 

 

 

 

fault detection board contact

201

DGT fault, compressor A2

Compressor A2 shut down

 

Ditto

Hot gas thermostat contact open

202

Starter Guard fault compressor A 2

Compressor A2 shut down

 

Ditto

Crankcase heater fault and open motor current

 

 

 

 

 

fault detection board contact

301

DGT fault, compressor A3

Compressor A3 shut down

 

Ditto

Hot gas thermostat contact open

302

Starter Guard fault compressor A 3

Compressor A3 shut down

 

Ditto

Crankcase heater fault and open motor current

 

 

 

 

 

fault detection board contact

401

DGT fault, compressor A4

Compressor A4 shut down

 

Ditto

Hot gas thermostat contact open

402

Starter Guard fault compressor A 4

Compressor A4 shut down

 

Ditto

Crankcase heater fault and open motor current

 

 

 

 

 

fault detection board contact

501

DGT fault, compressor B1

Circuit B shut down

No

Ditto

Hot gas thermostat contact open

502

Starter Guard fault compressor B1

Circuit B shut down

No

Ditto

Crankcase heater fault and open motor current

 

 

 

 

 

fault detection board contact

601

DGT fault, compressor B2

Compressor B2 shut down

 

Ditto

Hot gas thermostat contact open

602

Starter Guard fault compressor B 2

Compressor B2 shut down

 

Ditto

Crankcase heater fault and open motor current

 

 

 

 

 

fault detection board contact

701

DGT fault, compressor B3

Compressor B3 shut down

 

Ditto

Hot gas thermostat contact open

702

Starter Guard fault compressor B3

Compressor B3 shut down

 

Ditto

Crankcase heater fault and open motor current

 

 

 

 

 

fault detection board contact

801

DGT fault, compressor B4

Compressor B4 shut down

 

Ditto

Hot gas thermostat contact open

802

Starter Guard fault compressor B4

Compressor B4 shut down

 

Ditto

Crankcase heater fault and open motor current

 

 

 

 

 

fault detection board contact

35

Page 35
Image 35
Carrier 30GK manual Compressor faults 6.4.1.1 General, Compressor protection devices, Starter Guard

30GK specifications

The Carrier 30GK is a prominent chiller model known for its efficiency and reliability in various commercial and industrial applications. Offering a blend of advanced technology and robust design, the 30GK series caters to diverse cooling needs while maintaining energy efficiency and low operational costs.

One of the standout features of the 30GK is its use of the latest scroll compressor technology. This contributes to its efficient performance, enabling the chiller to operate at optimal levels while minimizing energy consumption. The scroll compressor is known for its quiet operation, which reduces noise pollution, making it an ideal choice for buildings located in noise-sensitive environments.

The 30GK chiller series is equipped with microchannel coil technology, which allows for improved heat exchange efficiency. The microchannel design uses a compact coil structure that enhances refrigerant flow and reduces refrigerant volume, leading to a smaller footprint compared to traditional coil designs. This innovative design not only saves space but also improves the chiller's overall performance.

Another notable characteristic of the Carrier 30GK is its environmental consciousness. The chiller operates using environmentally friendly refrigerants, aligning with modern regulations and sustainability goals. Its design incorporates energy-efficient components that contribute to significant reductions in greenhouse gas emissions, making it suitable for environmentally responsible projects.

Moreover, the 30GK is designed for easy serviceability, with accessible components that simplify maintenance. This feature is particularly important for facility managers seeking to minimize downtime and keep maintenance costs low. The chiller also includes advanced monitoring and control systems, which enable real-time performance tracking and diagnostics, enhancing operational efficiency.

In terms of performance, the 30GK chiller is known for its wide capacity range, making it versatile for various applications. Whether for commercial spaces, industrial processes, or large buildings, the 30GK can meet the cooling demands reliably.

Overall, the Carrier 30GK chiller represents a perfect balance of cutting-edge technology, energy efficiency, and sustainability. Its features make it a leading choice in the market, suited for those looking to invest in high-quality and dependable cooling solutions.